Debut writer, Leonie Agnew took away the Best First Book Award and won the Junior Fiction category for her novel Super Finn.
The Young Adult Fiction category award went to Calling the Gods by Jack Lasenby.
Rahui by Chris Szekely and illustrated by Malcolm Ross won the Picture Book category. The book has two language editions: Te Reo Maori and English.
"Both versions of this beautiful book have a timeless quality, with the story dealing sensitively with the sad drowning of a cousin,'' Ms Candler said.
WINNERS:
New Zealand Post Children's Book of the Year
Nice Day for a War by Matt Elliott and illustrated by Chris Slane (HarperCollins Publishers)
Children's Choice Award
The Cat's Pyjamas by Catherine Foreman (Scholastic New Zealand)
Best First Book Award
Super Finn by Leonie Agnew (Scholastic New Zealand)
Picture Book category
Rahui (Maori version) by Chris Szekely translated by Brian Morris and illustrated by Malcolm Ross (Huia Publishers)
Rahui (English version) by Chris Szekely and illustrated by Malcolm Ross (Huia Publishers)
Honour Award
Shaolin Burning by Ant Sang (HarperCollins Publishers)
Non-Fiction category
Nice Day for a War by Matt Elliott and illustrated by Chris Slane (HarperCollins Publishers)
Honour Award
Digging Up The Past: Archaeology For The Young & Curious by David Veart (Auckland University Press)
Junior Fiction category
Super Finn by Leonie Agnew (Scholastic New Zealand)
Honour Award
The Travelling Restaurant by Barbara Else (Gecko Press)
Young Adult Fiction category
Calling the Gods by Jack Lasenby (HarperCollins Publishers)
Honour Award
The Bridge by Jane Higgins (Text Publishing Company)
Each Category Award winner received $7,500.
The winner of the New Zealand Post Children's Book of the Year Award took home an extra $7,500.
The winner of the Best First Book Award and the Children's Choice Award received prize money of $2,000 each.